project-base/server-skynet-source-3rd-jemalloc
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Add JEMALLOC_COLD, and mark some functions cold.

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This hints to the compiler that it should care more about space than CPU (among
other things).  In cases where the compiler lacks profile-guided information,
this can be a substantial space savings.

For now, we mark the mallctl or atexit driven profiling and stats functions that
take up the most space.
This commit is contained in:
David Goldblatt
2020-12-17 12:04:07 -08:00
committed by David Goldblatt
parent 5d8e70ab26
commit a9fa2defdb
7 changed files with 36 additions and 1 deletions
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3
include/jemalloc/jemalloc_defs.h.in
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@@ -16,6 +16,9 @@
/* Defined if fallthrough attribute is supported. */
#undef JEMALLOC_HAVE_ATTR_FALLTHROUGH
/* Defined if cold attribute is supported. */
#undef JEMALLOC_HAVE_ATTR_COLD
/*
* Define overrides for non-standard allocator-related functions if they are
* present on the system.

7
include/jemalloc/jemalloc_macros.h.in
View File

@@ -85,6 +85,7 @@
# else
# define JEMALLOC_ALLOCATOR
# endif
# define JEMALLOC_COLD
#elif defined(JEMALLOC_HAVE_ATTR)
# define JEMALLOC_ATTR(s) __attribute__((s))
# define JEMALLOC_ALIGNED(s) JEMALLOC_ATTR(aligned(s))
@@ -120,6 +121,11 @@
# define JEMALLOC_SECTION(s) JEMALLOC_ATTR(section(s))
# define JEMALLOC_RESTRICT_RETURN
# define JEMALLOC_ALLOCATOR
# ifdef JEMALLOC_HAVE_ATTR_COLD
# define JEMALLOC_COLD JEMALLOC_ATTR(__cold__)
# else
# define JEMALLOC_COLD
# endif
#else
# define JEMALLOC_ATTR(s)
# define JEMALLOC_ALIGNED(s)
@@ -133,6 +139,7 @@
# define JEMALLOC_SECTION(s)
# define JEMALLOC_RESTRICT_RETURN
# define JEMALLOC_ALLOCATOR
# define JEMALLOC_COLD
#endif
#if defined(__APPLE__) && !defined(JEMALLOC_NO_RENAME)